package com.sky.service.impl;

import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // 对前端传过来的明文密码进行MD5加密
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     * @param employeeDTO
     * @return
     */
    @Override
    public int addInsert(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();

        //对象属性拷贝
        BeanUtils.copyProperties(employeeDTO, employee);

        //设置账号的状态，1正常，2锁定
        employee.setStatus(StatusConstant.ENABLE);

        //设置默认密码123456
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

        //设置创建时间和更新时间
        //employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());

        //设置当前记录创建人id和修改人id
        //从threadLocal中取出id值添加到数据库
        //employee.setCreateUser(BaseContext.getCurrentId());
        //employee.setUpdateUser(BaseContext.getCurrentId());

        int i = employeeMapper.addInsert(employee);

        return i;
    }

    @Override
    public PageResult squerList(EmployeePageQueryDTO employeePageQueryDTO) {

        PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());

        List<Employee> employees = employeeMapper.squerList(employeePageQueryDTO);

        PageInfo<Employee> employeePageInfo = new PageInfo<>(employees);

       /* HashMap<Object, Object> map = new HashMap<>();

        map.put("当前页数据", employeePageInfo.getList());

        map.put("获取总记录数", employeePageInfo.getTotal());

        map.put("获取总页数", employeePageInfo.getPages());*/

        return new PageResult(employeePageInfo.getTotal(), employeePageInfo.getList());
    }

    /**
     * 启用禁用员工账号
     * @param status
     * @param id
     */
    @Override
    public void disable(Integer status, long id) {

        Employee employee = Employee.builder()
                .status(status)
                .id(id)
                .build();

        employeeMapper.update(employee);
    }

    @Override
    public void updateEmployee(EmployeeDTO employeeDTO) {

        Employee employee = new Employee();

        //对象属性拷贝
        BeanUtils.copyProperties(employeeDTO, employee);

        //设置创建时间和更新时间
        //employee.setUpdateTime(LocalDateTime.now());

        //设置当前记录创建人id和修改人id
        //从threadLocal中取出id值添加到数据库
        //employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.update(employee);
    }

    /**
     * 查询单个员工
     * @param id
     * @return
     */
    @Override
    public Employee squerSingle(long id) {

        Employee employee = employeeMapper.squerSingle(id);

        return employee;
    }

    /**
     * 修改密码
     * @param passwordEditDTO
     */
    @Override
    public void updatePassword(PasswordEditDTO passwordEditDTO) {

        String byPassword = employeeMapper.getByPassword(passwordEditDTO.getEmpId());

        String s = DigestUtils.md5DigestAsHex(passwordEditDTO.getOldPassword().getBytes());

        Employee employee = new Employee();

        if (byPassword.equals(s)){
            String s1 = DigestUtils.md5DigestAsHex(passwordEditDTO.getNewPassword().getBytes());
            employee.setId(passwordEditDTO.getEmpId());
            employee.setPassword(s1);
            employeeMapper.update(employee);
        }
    }
}
